Question

quantos mols correspondem a 100 gramas de cálcio

Answer 1

1 mol de cálcio_______40g
x_________________100g
x=2,5 mol

Answer 2

Ca = 40g/mol

1 mol ______ 40 g
x _________ 100

x = 100/40

x = 2,5 mols



att: Jhonny ♥